收稿日期: 2013-03-26
修回日期: 2013-06-05
网络出版日期: 2014-03-15
基金资助
新一代宽带无线移动通信网科技重大专项（2009ZX03002-015-02）资助
Joint optimization of the OFDM system simultaneously corrupted by clipping and quantization distortions
Received date: 2013-03-26
Revised date: 2013-06-05
Online published: 2014-03-15
李占亚 , 张光荣 , 陈晓辉 , 王卫东 . 同时含有限幅失真和量化失真的OFDM系统的联合优化[J]. 中国科学院大学学报, 2014 , 31(2) : 249 -256 . DOI: 10.7523/jssn.2095-6134.2014.02.016
We consider the OFDM system simultaneously corrupted by the clipping distortion and quantization distortion. Joint optimization of such an OFDM system from the standpoint of end-to-end link is investigated. The corresponding multi-variable and multi-object optimization models are established and the Pareto front is obtained through software simulation by employing the NSGA-Ⅱ algorithm. Results show that at USQ width of 1 or 2 bit, more than 5dB peak-to-average power ratio gain is achieved while the loss of the average channel capacity is much less than 0.1 bps/Hz. Meanwhile, the theoretical BER of the OFDM system is derived and its accuracy is verified by software simulations.
Key words： OFDM; clipping distortion; quantization distortion; joint optimization
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